Synopsis.

One of the strongest jujutsu sorcerers at the time, as a student at Jujutsu High, Geto took is his role as a jujutsu sorcerer very seriously. He believed that strength was meant to protect the weak. However, after failing to protect Riko Amanai, a star plasma vessel needed to maintain Tengen’s immortality and preserve sorcerer society, Geto began to question the value of protecting non-sorcerers. Over the course of that year, he spiraled into a worse and worse mental state, until he was sent on a mission to deal with a curse in a remote village. There, the villagers blamed two young curse users for the incidents caused by the curse, and asked Geto to kill them. Geto instead wiped out the entire village, 112 people, and fled with the two young girls. He then decided that he was going to aim to kill all non-sorcerers to create a harmonious world for jujutsu sorcerers.

To this end, he took over a cult, using his abilities to gain followers so he could collect money and curses. After ten years of this, he found out about a special grade curse attached to Yuta Okkotsu. When Yuta refused to join up with Geto, Geto launched simultaneous attacks on Tokyo and Kyoto, dividing the sorcerer’s forces, so that he could find Yuta alone at Jujutsu high and attempt to kill him to get his curse. Yuta managed to overpower Geto and mortally wound him, and Satoru Gojo returned to finish him off.